JPS6047270A - Information signal recording disc - Google Patents

Abstract

PURPOSE:To eliminate the need for a buffer memory to store a sound signal and a control program signal to a reproducer by recording one or both of the sound signal and the control program signal data substantially on real time in the direction of time axis together with a picture element data group relating to a still picture. CONSTITUTION:A VTR17 reproduces a 16-channel data (compressed sound data and/or digital signal data). A VTR8 reproduces a picture element data group obtained separately by digital modulation by a video signal relating to a 8- channel still picture. The 8-channel compressed sound signal data is extracted from a signal converter 9 as a data of Ch-1 and a 8-channel digital signal data is extracted serially as a data of a Ch-2. The picture element data group is extracted as the data of Ch-3 and Ch-4 in parallel at a fixed period from a signal converter 10. A signal processing circuit 11 forms a signal of one block of the signal format as shown in figure from each 1-word 16-bit of the data of Ch-1-Ch-4 and the digital signal synthesized in time series at each unit of one block is outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an information signal recording disk, in particular for recording data such as audio signals, computer control programs, etc. in the same easy-to-use chronological manner as well as pixel data groups related to mI still images. This invention relates to an information signal recording disc synthesized and recorded on the disc.

Conventional technology Conventionally, after the audio signal and the video signal, or only the audio signal of multiple A7 channels are digitally modulated (particularly pulse code modulation), the digital data of each A7 channel is synthesized in time series with redundant bits. , an information signal recording disk (which is further frequency-modulated and recorded on concentric or spiral tracks, for example, as a change in geometrical shape)
1z (hereinafter referred to as "disk") is widely known. The recorded information on this disc is mainly an audio signal, and the video signal is a still image that serves as auxiliary information for the audio information listener, so it is combined with a digital audio disc. According to such a digital audio disc, audio signals of extremely high quality and high fidelity can be transmitted through transmission paths of multiple channels (for example, 4 A7 channels), and even still images can be transmitted with high quality.

However, in recent years, it has become possible to connect the Digicle A-diodisk playback device to an external device with a judgment function (such as a personal computer) to perform so-called interactive playback. In order to achieve this, a low-frequency control program signal that should be loaded externally is recorded on a disk, and the audio signal is also an ultra-high-fidelity audio signal, rather than a still image. The associated number kl-I
Z level audio signals (e.g. announcement sounds, sound effects, etc.)
In some cases, the data may be transmitted. When recording such low-frequency signal data together with a group of pixel data related to still images for multiple channels, generally the period required for one still image to be played back and displayed before switching to the next still image is The low-frequency signal data of the plurality of channels are compressed within (for example, 20 to 30 seconds), and are combined and recorded serially so as to be transmitted in series. Therefore, in order to play back such a disc and obtain the playback sound of low frequency signal data of 7 channels arbitrarily selected along with the still image, it is necessary to In order to temporarily store all low frequency signal data in a buffer memory and then read out the signal data of a desired negative channel at the same time as the start of still image reproduction, a second Balanor memory is required.

However, this buffer memory is, for example, 64 bytes x 6
This is a large-capacity memory that is expensive, and when peripheral circuits such as a memory read controller and a memory write controller are included, it becomes extremely expensive.

Therefore, the present invention provides a method for recording data such as low-frequency audio signals and control program signals of multiple channels in real time in the time axis direction when recording one or both of them together with pixel data F and Y related to still images. The purpose of the present invention is to provide an information signal recording disk that solves the above problems.

Means for Solving the Problems The present invention provides beta voice data each digitally modulated with low frequency audio signals of N7 A7 channels (N is a natural number of 2 or more) and computer control program signals of multiple A7 channels. At least one of the signal data in the audio frequency band such as , etc. is digitally modulated with a video signal related to a still image of N channels, and a group of pixel data obtained, together with information of M channels (M is a natural number of 2 or more). A redundant bit is added to each fixed word of the information data of the M channels to form one block, and the digital signal that is synthesized in time series for each block is further modulated and recorded. is an information signal recording disk in which, after transmitting the pixel data group related to one still image, the audio data of the N channels and the signal data of the plurality of channels related to the still image are recorded, and each channel A7 The audio data of the channel and the No. 13 data are recorded substantially in real time in the time axis direction in units of 2 or more blocks, and an embodiment thereof will be explained below with reference to the drawings.

Embodiment FIG. 1 shows a block system diagram of an embodiment of a main part of a recording system of a disc according to the present invention. In the figure, the 16-channel audio deck 1 produces announcement sounds for explaining still images (still images in this specification also include partial moving images) and effects that give sound effects to still images. Number of sounds, etc. A low frequency audio signal of about 1-IZ is pre-edited and recorded into a total of 8 channels of 1 to 1000 for each national language in the case of announcement sounds, and for different sound effects in the case of sound effects. In addition, the remaining 8 channels of tracks are connected to an external device with a judgment function that is connected to a disc playback device (described later).
Ru. ) is reproduced from a magnetic tape on which the control program signals to be loaded are edited and recorded in advance according to the programming language of various personal computers, for example. Here, the above-mentioned control program signal +1 is a signal in the same band and in the same signal form as the control program signal reproduced by the tape recorder and supplied to the audio system 1 to interface of the part-time computer, and therefore is audible. It is a low frequency signal within the frequency band.

J5, instead of the above control program signal, all 8 channels A7 channels, or 7 channels or less of the 8 channels A7 channels are the above control program signal d), the remaining D A
In the 7 channel, graphic information signals (graphics signals), text information signals (character signals), and musical note signals that cause a personal computer to perform automatically are also recorded in the same band as the control program signal. Sometimes.

In the ice age details, these control program signals, graphics signals, character signals, musical note signals, etc. are collectively referred to as signal data for convenience.

Of the 16 channels of reproduced signals reproduced by the 16 channels A7 channel audio deck 1, 8 channels of reproduced audio signals are supplied to the compressed audio modulator 2, and 8 channels of reproduced signal data are supplied to the arc modulator 3. . The modulator 2 performs digital modulation (for example, PCM) on the 8 channel/7 channel reproduced audio signals separately, and performs band compression, bit-wise compression (for example, non-linear m-prediction, etc.), and time-axis compression. For example, compressed audio data with a sampling frequency of 8.82 kHz and an E'r conversion bit number of 8 bits is generated and outputted to the formatting circuit 4. On the other hand, the modulator 3 performs digital modulation (for example, PCM) on the input reproduction signal data, for example, at a sampling frequency of 8.82 kHz, m predetermined pitches of 1 to 8.
Bit digital data is generated and outputted to the format ink circuit 5.

The formatting circuits 4 and 5 arrange the input data as shown in FIG.
After combining the 8-bit synchronization signal, the 8-bit mode identification signal, and the 8-A7 channel data, they are serially supplied to the video signal converter 6. The video signal converter 6 records with a VTR 7.

In order to be able to play back digital data, both the output digital data of format ink circuits 4 and 5 are supplied, and these input data are superimposed on each video period by a certain number of times to produce a composite video signal. After converting to A signal),
The signal is modulated and supplied to the VTR7, where it is recorded on a magnetic tape.

Figure 2 shows other important parts of the recording system of the disc according to the present invention.
- Shows an example block system diagram - Lee 1 This block system diagram itself is publicly known, and the signals recorded in the VTRs 7 and 8 (pressure 11 & voice data, digital signal data, etc.)
The format is new. In Figure 2, J3 and V
The TR7 corresponds to the VTR7 shown in Figure 1, in which the 1116 channels of data (compressed audio data and/or digital signal data) are converted into a video signal format, and further modulated using a modulation method suitable for magnetic recording and reproduction. The magnetic tape recorded on the magnetic tape is reproduced, and the reproduced signal No. 18 is supplied to the signal converter 9. On the other hand, the VTR 8 uses, for example, a sampling frequency of 44.1 kl-(, which is obtained by separately digitally modulating (especially PCM) video signals related to still images of 8 channels J' in the same manner as shown in FIG. Z, pixel data J with m predetermined number of 8 bits per pixel, and another component encoded pixel data group are superimposed on the video period of the composite video signal and then modulated and recorded on the magnetic tape. , and supplies the reproduced signal to the No. 8 converter 10.

The signal converters 9 and 10 demodulate the reproduced signal to extract a reproduced composite video signal, and after extracting the data superimposed on the video period, divide the data into two channels and chronologically As a result, the compressed audio data of the 8 channels and A7 channels are serially extracted from the signal converter 9 as the data of the first channel Ch-4 in the signal format shown in FIG. 8 channels of digital signal data are sent to the second channel CI
It is taken out serially as data l -2. On the other hand, at the same time, component encoded pixel data groups of still images of each channel out of a total of eight channels are taken out in parallel from the im code conversion device 10 at regular intervals, and the signal format shown in FIG. 3rd in 1. The data is supplied to the signal processing circuit 11 as data of the fourth channel C11-3, C1)-4. In this case, pixel data of one channel may be transmitted in parallel as data of 011-3 and CIT-4, or pixel data of two channels may be transmitted separately and in parallel. As shown in FIG. 6, the case will be explained by taking as an example the case where pixel data of one channel is transmitted in parallel as data of Ch-3 and Ch-4.

The signal processing circuit 11 is constituted by a well-known IC, and processes 16 bits 1 to 2 of each word from 16 bits of each input data of 4 channels Cb-1 to C11-/1.
After generating the various error correction codes, these arrays are rearranged in a fixed order, and a synchronization signal, an error check code, and one bit of a control signal are added to each of them to generate a signal as shown in Figure 3. A signal for one block of format 1- is generated, and a digital signal synthesized in time series in units of this one block is output in the same way as with both hands.

Here, in the signal of the η1 block shown in FIG. 3, S indicates the arrangement position of the 8-bit fixed pattern synchronization signal indicating the start of the block. C11-1゜Ch -2,0b
-3 and Ch-4 indicate the location of one word of approximately 16-bit digital data. Also, P and Q are each 1
An error correction code of 6 bits 1, for example, P=W+■W2■W3■W4, Q=T4 ・W1■T3 ・W2■T2 ・W3■T-
This is a signal generated by the formula W4. However, (1).

(2) In the formula, VV+, W2, W3, and W4 are C
16-bit digital data of IT-1 to CI+-4 (usually digital data in different blocks), T is an auxiliary matrix of a predetermined polynomial, and ■ is the addition modulo 2 of each corresponding pitch 1 to f13. Showing bullets.

Furthermore, in FIG. 3, CRC is an error checking code of 23 bits 1 to Cb-4 arranged in the same block.
, Q, for example, X23-1-X5+X4-1-
This is the 23-bit remainder obtained when divided by a generator polynomial of [If the remainder is zero, it is used to detect that there is no error. Furthermore, in FIG. 3, Δdr indicates the multiplexing position of the '1 bit of the control signal used for random access or the like. This control signal distributes each pick data and
For example, all the pitches of the control signal are transmitted by the 196 block (i.e., the control signal is
R4 is made from 96 bits 1 to 96 bits. ).

Also, in history, U is 2 bits 1~ for a reserve, which is called user's bits 1-. Then, from S (not shown in the t3 diagram)
), one block of signal is composed of 130 bits in total, and the digital signal is synthesized in this block unit at the same frequency as the sampling frequency of the digital sub-dio signal (44.1 kl-IZ) and transmitted in time series. be done.

The above 196-bit control signal has a configuration in which four types of address signals of 49 bits each are synthesized in time series, and these four types of address signals all have the signal format shown in FIG. It is said that

In Figure 4, 5 of the 49 address signals 1 to 1
The first 24 bits indicated by YNC are synchronization signals, and their values differ depending on the four types of address signals. The next 4 bits of the synchronization signal are 4 bits (7 channels C11-1 to Ch4) indicating which of the seconds of the data transmitted, 2 bits indicating the source mode, and 2 bits indicating the source mode. It consists of a 2-bit normal/stop mode discrimination signal NR/ST that indicates whether or not to start stop playback, address data is placed in the next 20 bits 1~, and the last 1 bit is a parity bit 1~. be.

In addition, in the address data shown in FIG. 4, if this 49-bit address signal is a time address signal, the 1 to rack positions on the disk where this address signal is recorded are normal from the recording start position of the disk. This is time data that indicates which () is the playback time at the end of playback, and in the case of chapter address No. 18, the track position where that signal was recorded, and the number from the recording start position on the disc]] This is J data indicating whether or not the Otona program has been recorded.

One block of signals in the signal format shown in Figure 3 is:
The data are synthesized block by block at 44.1 kllz, which is the same as the sampling frequency, and are recorded in time series (therefore, the period of synchronization shown by S in Figure 3) is 441 kl-(
equal to the reciprocal of Z), then) the regenerated wave ``to j'': 000 r 1) Rotated by Ill and greening'
; Assuming that J is played, each 1~Rack for each rotation of the disk has 2940 (= 44.IX
103 x (GO/900)) blocks will be recorded. J, the above-mentioned 196-bit control signal is recorded 15 times in each 1-rack for each revolution of the disk, and is reproduced.

Next, the No. 1 format of the data transmitted with one word placed at each position shown as Ch-1 to C11-4 in FIG. 3 will be explained in more detail. First, the t12 word of the pixel data group related to the still image is placed at the positions 0h-3 and C11-4.

In view of the fact that the frequency band transmitted by the television receiver is narrower than that of the standard television system, this pixel data group is
The purpose is to effectively utilize the unused portion of a general commercially available 34 kRAM (random access memory) as much as possible by using a memory circuit that simultaneously encodes signals. Therefore, the present applicant first filed patent application 11j'
, No. 57-67818, the sampling frequency of the luminance signal is 9 MHz.

The sampling frequencies of the two types of color difference signals (R-Y) and (13-Y) are respectively selected to be 2.25 MHz, which is 1/4 of the frequency of 9 M l-1z, and - the luminance pixel per scanning line is The product of the number (for example, 456) and the standard television system J5 (the number of effective scanning lines for one screen (for example, 572) is 2''
The pixel data is selected to be extremely close to , and does not exceed 2/, P, and is PCM-processed.

In other words, the pixel data of the luminance signal is (herbization frequency 9
M1-12. The number of quantization per pixel is 8 pixel, and the sampling frequency is set to 88.2k f'z using memory,
The pixel data of the two color signals (R-Y) and (B-Y) are sampled at a sampling frequency of 2.25 Mllz, and those with 8 bits of quantization per pixel are sampled at a sampling frequency of 88. 2k 1-tz and one field is transmitted in signal formats 1 to 1 as shown in FIG.

In FIG. 5, one word has 16 pits, and each pixel data with 8 bits of quantization bits is arranged in the upper 8 pits i~ and lower 8 bits of one word, so one word consists of two pixels. Data will be transmitted. Also Y
l is the word in the first vertical column of the leftmost 9 of the screen; Pip 1~
．． The lower 8 bits of the first word, the upper 8 bits of the second word, the lower 8 bits of the second word, and the upper 8 bits of the third word.

. . , the lower 8 bits of the 143rd word. Y2 is a group of 2110 brightness pixel data in the second vertical column second from the left end of the screen, and Y3 is a total of 21'lG pieces of fIli in the third vertical column third from the left end of the screen.
Similarly, Yi (i is 1 to 456
) is ill in the first vertical column from the left edge of the screen, 28
G luminance pixel data groups are shown, each pixel data is arranged in the same manner as the pixel data group Y1, and pixel data for one vertical column is transmitted in 143 words each.

In addition, (RY)j is the jth pixel data group of the first digital color difference signal arranged vertically from the left edge of the screen, and (B-Y), i is the jth pixel data group from the left edge of the screen. This shows a group of old 286 pixel data of the second digital color difference signal arranged in the vertical direction, and the 286 pixel data in the same column are sequentially arranged from the top to the bottom of the screen as the top 8 pixels of the first word. 1~. Lower 8 bits of the 1st word, upper 8 bits of the 2nd word 1-9 lower 8 bits of the 2nd word
Pixel data is arranged in the following order: 8 bits 1 - 1 of the 3rd word, lower 8 bits 1 of the 143rd word, and the pixel data for 1 column vertically in 143 words is transmitted (however, jIL1 to 114).

In this way, transmitting pixel data in the vertical direction of the screen is
It is an IC that facilitates conversion of the number of scanning lines.

Further, as shown in FIG. 5, the digital luminance signal of the component [~encoded signal i] starts at Y4j-3. 11
Four pixel data groups (Y4 j -3, Y4 j -2,
Y4 j −+ , Y4 j ) and two types of digital color difference signals (R-Y) j and (BY) J, a total of six pixel data groups, are divided into one unit and transmitted in time series for each unit. The signal format used is J3, with the same unit (
The six constituting pixel data groups are respectively loaded into memory circuits in a still picture decoder (to be described later) into 111 addresses (separately and at the same address in 14 or 66 columns of memory element groups).

The header signals are shown as 1-11 to 8684 in FIG.
Y)j is placed at the initial position of each of the 684 pixel data groups in total, and is transmitted as a signal for allowing the reproduction device to identify various information of the pixel data group immediately thereafter. The header signals 1-11 to 1-1684 consist of 6 words, and they have a common signal format.

The structure of the header signal was disclosed by the present applicant in, for example, Japanese Patent Application No. 1983-
185243, so the detailed explanation will be omitted, but the 111J signal is placed in the upper 15 bits of the first word, and the lowest pit of the first word is Various identification codes (mode signals) are arranged in the 2nd word, and the following 143 codes are arranged in the 3rd and 4th words.
The 16-bit address code of the memory circuit in which the first pixel data of the upper 8 pixels of the first word of the pixel data group of a word or the pixel data imprinted thereon is to be stored is based on the number of scanning lines of 625. There are two types: substitution and 525-scanning-line tree method. The 6th word is a spare word (1G is all returned to 1).

The digital video signal of the signal format i- shown in FIG. For the purpose of preventing vertical resolution deterioration, the data consists of, for example, data of pixels arranged in a checkered pattern within the screen out of the pixels of one frame. This digital video signal is transmitted through two A7 channels (C11-3 and Ch'-4 in one block, as shown in FIG.
One word each is arranged and transmitted at word transmission positions C11-3 and Ch-4 (same as C11-3 and Ch-4 in FIG. 3). In other words, the digital video subsignal consists of 2 words (32 words) in 1 block.
Therefore, as shown in Figure 6, it is transmitted in 50,958 blocks, so the transmission time is 1.16 (-50958/(44, lX103
) ) seconds. In addition, in FIG. 6, 5YNC indicates the 15th pit of the synchronization signal in the header signal, and Yu~)114
indicates the pixel data of the first two words of the pixel data group Y1 in FIG. In addition, P + * P 2 indicates a component-encoded pixel data group of the first and second channels.

Furthermore, there are 8 channels of still images, and the digital video signal for each field of the first channel is the minimum unit in which one still image is displayed, as shown by Pa, PI2, ... in Figure 7. The digital video signal for each field of the second channel is transmitted intermittently at a period of about 20 seconds, for example, as shown in the figure.
22, . . . are transmitted intermittently at a period of approximately 20 seconds, and in the same manner, the digital video signals for each field of the third to eighth channels are transmitted intermittently at a period of approximately 20 seconds. transmitted. Also, within one period of approximately 20 seconds, the γ digital video signals Pu, P2+, P31, . . . regarding the first still image of the 8-way channel are generated.
P71. Similarly, within the next cycle, one field worth of digital video signals PI2 .
P22° . Similarly, 8 days and 17 channels of signal data are sequentially transmitted and recorded in synchronization with still images.

Next, the data placed at the positions Ch-1 and Ch=2 in FIG. 3 are shown in FIG. 6 in this embodiment. Ill
<, CI)-1 supports 8 channels of still images.
The compressed audio data of the IC8 and A7 channels is arranged, and the C1
1-2 is signal data corresponding to still images of 8 channels and A7 channels. Further, as shown in Fig. 6, the sampling frequency is 8.82kl-IZ, and the number of quantification bits is 8pi1~
The compressed 8-voice data and signal data of 2 A7 channels are arranged in the same block, and the 5-channel data is arranged in the same block.
The synchronization signal of the value in the W method is placed in the third place by 1- of Ch-1 and Ch-2 of the block for each block transmission cycle, and the lower pi! A J identification code indicated by rMODEJ is placed in -). This identification]-de is
The lower bits of Ch-1 indicate the compression method of compressed audio data, and the lower bits of C11-2 indicate that the signal data to be transmitted is the control program signal, graphics signal, or It is used for identifying signals, key signals, etc.

Also, as shown in FIG. 0, the compressed audio data of the first channel is stored in S11. S12. As shown in ..., it is placed in the upper pie 1~ of Ch-1 of the block next to the Domei signal.
The block transmission cycle is transmitted sequentially in 111J days, and the second
The compressed 8-voice data for the channel is S21゜$22.・・・
・As shown in J, the compressed audio data of the 3rd and 4th channels is placed in the lower pie 1~ of Ch-1 of the next block of the synchronization signal and is transmitted sequentially every 5 block transmission cycles, and the compressed audio data of the 3rd and 4th channels is , the compressed audio data of the fifth and sixth channels, and the compressed audio data of the seventh and eighth channels are arranged in the same block and are sequentially transmitted every five block transmission periods. Similarly, the signal data Do, D2+'t D31, etc. of 8 channels A7 are each 2 blocks (signal data of 7 channels are arranged in the same block, and are sequentially transmitted every b block transmission period IIIJ). transmitted to.

Here, the compressed audio data and signal data of each channel A7 mentioned above have sampling frequencies of 8.82 and 1-17.
and, on the other hand, 5 block transmission period, ie 8,82
Since they are transmitted at a period that is the reciprocal of kl-12, these compressed audio data and signal data are ultimately transmitted in real time in the time axis direction (horizontal axis direction in FIG. 6). In addition, the synchronization signal for compressed audio data and signal data is always transmitted at a constant 5-block transmission cycle, regardless of the existence of the data, whereas compressed audio data is As shown, following the digital video signal P11 of the first still image of the first channel, the compressed audio data 51 of the first channel A7 to be generated together with the still image of the signal 1]11 for about 20 seconds. -1 is transmitted, and then the compressed ?4'L data 51-2 to be played back together with the still image of the 2nd day of the 1st channel\7 is the digital video signal P12 related to the still image of the 2nd day of the first channel. It is transmitted for about 20 seconds immediately after being transmitted. Compressed audio data S21 that is played back while displaying one still image of another channel A channel.
. . , S8-+, . . . similarly, from immediately after one field of digital video signals P 2+ , . transmitted.

Returning to FIG. 2 again, the digital data is CI+-1 to CI+-1 on the Shintanfu A-mat as shown in FIG.
A time-series composite signal of the signals of the /C1 block shown in FIG.
The M-sequence code generated by the generator polynomial X'-t-1 and the correction modulo 2 are converted into a scrambled signal from an NRZ (non-return-to-zero) signal. After that, it is supplied to the frequency modulator 13.

This is frequency modulated by the scrambled digital signal in the frequency modulator 13, and the data is [1]
The carrier wave is 7. GMH2, 5.8 for rOJ throat
Frequency spectrum 1 as shown in Figure 8, indicating MH7
- a frequency modulated wave signal having a ram is taken out and output to the output terminal 14; In addition, during the 8th N, fPl, f
P2 and fP3 indicate frequency spectra of reference signals fp+, fpz and [ρ3, which will be described later.

The output signal of the output terminal 14 is supplied as a first input signal to a known recording device, and is switched to one rotation period of the disc-shaped recording master, and a burst-shaped first reference signal fp+. The burst-like second reference signal fP2 is supplied alternately and in time series, and further, f p+ , f
A signal obtained by inserting the reference signal fp3 into the switching position of P2 is supplied as a second input signal. The recording device receives the first modulated laser beam modulated by a multiplexed signal of the first input signal and the reference signal 1'P3, and the reference signal fp+.

The second modulated laser beam modulated by the fp2 multiplexed signal is simultaneously focused on the photosensitive material on the disc-shaped recording master at a distance of about 1/21 to rack pitch. This recording master is subjected to a known developing process, and then a known disc making process to produce the present invention, which has an electrode function and has a 1-rack pattern as shown in FIG. 9 in which no sword guide grooves are formed. A disc 15 is manufactured.

In FIG. 9, the information signal is recorded in a spiral pattern from 1 to 1 rack indicated by a solid line at a rate of 2940 blocks per -rotation, and on one side of the track a reference signal fp+ is placed as indicated by the O symbol. On the other side, a reference signal fp2 is recorded as shown by the X mark.In addition, the reference signal fp+ and fP21fi are switched alternately every one rotation. The reference signal fp3 is recorded for a period of, for example, 3H.Since the reference signals fp+ and fP2 are switched to alternating current and recorded every rotation, the reference signal fp3 is recorded for the information recording track as shown in FIG. The side on which fp+ and fp2 are recorded changes for each track (every rotation).

Next, to explain the playback device for playing back discs according to the present invention, FIG. 10 is a block system diagram of an example of a disc playback device, and FIG. 11 is a block system diagram of an example of the main part of the block system in FIG. Show the diagram. In FIG. 10, play A 720 rotates the disk 15 having the track pattern shown in FIG. The signal is picked up and reproduced, and known tracking control is performed based on the reproduced reference signals fp+ to fP3. An output command from the personal computer 21 is supplied to an external control terminal (for example, a predetermined pin terminal of an 8-pin connector) of the player 1720.

The reproduced signals of frequencies 1 to 1 as shown in FIG.
2, where it is FM demodulated and rearranged in the order of signal arrangement (dinterleave), and if there is a data error, the data error is corrected. (at the positions indicated by ch-1 and CI+-2)! ii! The digital data placed and transmitted is supplied to the data/compressed audio demodulator 23, while the
-3, Ch-11, respectively, and transmitted digital video A Shingetsu is supplied to the still image decoder 24.

FIG. 11 is a Lee block system diagram showing in more detail the 414 components of the digital signal demodulator 22 and the data/compressed audio demodulator 23, and shows the playback input to the input terminal 30.
1720J: The reproduced signal is supplied to the FM demodulation circuit 31, where it is FM demodulated and then sent to the descrambling circuit 3.
2 and the synchronization detection circuit 33. The descrambling circuit 32 outputs the signal S detected by the synchronization detection circuit 33 in FIG.
Even if the M-sequence code generated in synchronization with the 8-bit synchronization signal detection signal shown in , and using the same generating polynomial as when recording IC1, and the input reproduced digital signal are each tightened by a factor of 2. Which NRZ signal is converted? The reproduced NR and Z signals taken out from the descrambling circuit 32 are as follows.
The error detection circuit 34 is supplied to the error detection circuit 34, where the presence or absence of data errors in the same block is checked using error detection number M19, which is placed at the position shown by the CRC in FIG. 3 and transmitted. 35.

The error correction circuit 35 is supplied with the error check output from the error detection circuit 34, and is placed at the position indicated by P and Q in FIG. The error data is corrected and restored to the original correct data using the same number of error corrections, and further rearranged in the original order.These error detection circuits 34 and Error correction circuits 35
The configuration of the random access memory (R
AM) and shift registers.

Of the output data of the error correction circuit 35, the 1-word arrangement position Ch-3°C11-/l of the 3rd and 4th channels is arranged (the digital video signal to be transmitted is transmitted from the output terminal 36 as shown in FIG. On the other hand, compressed audio data is supplied to the still image data reader 24 shown in FIG.

The signal data is supplied to a compressed audio demodulator 37 and a data demodulator 38, respectively, as shown in FIG. These demodulators 37
and 38 constitute the data/compressed sound ij7 demodulator 23 in a 4:6 configuration, and a channel selection signal is supplied from the personal computer 21 through the input terminals 39. The compressed audio demodulator 37 extracts reproduced compressed audio data of the channel A7 selected by the channel selection signals 3 to 7 based on the detected output of the synchronization signal of the channel selection signal D r FF J. , :l, this is 5 blocks [Jtsuk transmission period maintenance 1, jshi, its output is D in the demodulator 37
The A converter performs a predetermined DΔ conversion according to the compression method to convert it into the original analog audio signal, and then outputs it to the output terminal 4.
Output to 0.

The data demodulator 38 extracts the signal data of the J and A7 channels selected by the channel selection signal in the same manner as the demodulator 37, then transmits it in 5 blocks and holds it for 5 blocks. DΔ conversion is performed by the DA converter located at the DA converter, and the signal is output after being converted into analog data in the audio signal band. Therefore, output terminal 40. /1.1, the analog signal of the data of the desired channel reproduced in real time is taken out, and the reproduced audio signal from the output terminal 40 is passed through the amplifier 2G to the first
It is applied to the speaker 27 shown in Figure 0, and also to the output terminal 4.
The reproduced log data from No. 1 is applied to the parts pull computer 21. Here, if the reproduced analog data from the output terminal 41 is a control program signal, the control program signal reproduced from the cassette tape deck is treated as a signal having the same signal form, and the audio power set 1 of the personal computer 21 is output. ~supplied to the interface.

However, depending on the 4% configuration of the personal computer 21, the input data may be in the form of a digital signal, so the data demodulator 38 may not require a kJ DA converter in that case.

On the other hand, the still image decoder 24 shown in FIG. 10 decodes only the digital video signal of channel A7 selected (according to the channel selection signal diagram of the personal computer 21), and decodes the digital video signal of channel A7 of other channels. The video signal is operated not to be decoded, and the digital video signal to be decoded is selected based on the header signal therein to select format 1- for importing the pixel data group into the memory circuit, and only the pixel data group is transferred to the memory circuit. The pixel data of the luminance signal is stored at the sampling frequency.
9M1-1z, and the pixel data of the color difference signal is converted to a sampling frequency of 2.25Ml-1z, and then synchronized and converted to D
The reproduced analog luminance signal, two types of reproduced color difference signals (R-Y), and (B
-Y) to the standard television system (t If necessary, please file a patent application III 5.
Please refer to Japanese Patent Application No. 7-185243, Japanese Patent Application No. 71144-1980, etc. ).

The monitor display device 25 is a monitor capable of superimposing, and based on the signal supplied from the still image decoder 24, a still image of a desired Boo-Funnel is moved into a still image of a taunt occupying a large area on the screen. The C personal computer 21J displays images (including area animations and partial animations), while superimposing and displaying other images as necessary.

At this time, as can be seen from FIG. 7, a still image of the desired channel is displayed on the monitor display device 25, and at the same time, the audio of the same channel is recorded substantially in real time from the speaker 27. A signal will be sounded. Compressed audio data and signal data are recorded substantially in real time and are played back in real time, so the buffer memory described above is unnecessary and can be played back and output sequentially.

Application Examples Note that the present invention is not limited to the embodiments shown in "-". For example, Daijikuruvide sub-IZ No. 1, which relates to still images, has separate still images in two channels Ch-3 and Ch-1 in FIG. It is possible to record images, and it is not just one field.
One frame of one frame may be recorded, and as shown in FIG. 4
I:<, so 16 bits of CI+-1 and C11-2
η124 on the 2nd byte side of 16 bits 1 to 2 at the position indicated by
Variations such as placing compressed high voice data in the bits and placing only 8 data in the lower bits of C11-2; b
It is possible to think of one as Ch-1 or Ch-
It is also conceivable to arrange the 32 pins 1 to 2 of 2 for transmission.Also, in the disk according to the present invention, 4 channels and 7 channels are arranged in one block, but 2 channels A7 and above are arranged. If so, what is the easy pattern?
The pattern is not limited to the 1 to easy patterns shown in Fig. A9, and the reference signals fp+ to fP3 may not be recorded.

Furthermore, the minimum unit time for displaying one still image is about 20 seconds in the above case, but may be about 45 seconds to 10 seconds. In addition, the digital data of No. 5 formats 1 to 1 shown in FIG.

Effects As described above, according to the present invention, when recording one or both of data such as an audio signal and a control program signal together with a group of pixel data related to a still image, It is recorded virtually in real time.
Birth +1. 'l(;1This is played back in real timel) + +, it is possible to eliminate the need for a buffer memory for storing audio signals and control program signals in the playback device, and this buffer memory is 641 (bytes). By eliminating the need for memory such as 6x6, the playback device can be constructed with a simple 41° 4-circuit configuration, and is also useful for still images. For example, the number N of transmission channels for audio data and/or signal data arranged in one block together with a pixel data group can be greater than or equal to the number M of transmission channels of information data in one block. It highlights its features.

[Brief explanation of drawings]

Fig. 1 is a J'' block system diagram showing an embodiment of the main part of the disc recording system according to the present invention, and Fig. 2 is a block system diagram showing another example of the main part of the disc recording system according to the invention. 3 shows an example of the signal format of one block of the digital signal recorded on the disk according to the present invention, and FIG. 4 shows the control signal in the digital signal recorded on the disk according to the present invention. Fig. 5 shows an example of the digital video A-mat (signal) A-mat in the digital signal recorded on the disc according to the present invention. The figures show an embodiment of the signal formats 1 to 1 of the information data recorded on the disc according to the present invention. FIG. 8 is a diagram showing an example of the frequency spectrum of a frequency-modulated wave signal frequency-modulated by a digital signal recorded on the disc of the present invention, and FIG. 9 is a diagram showing the relationship with the transmission order. FIG. 10 is a block system diagram showing an example of a playback device; FIG. 11 is a diagram schematically showing an example of a rack pattern; FIG. This is a system diagram. 1...16゜A7 channel audio deck, 2...
Compressed audio modulator, 3... Data modulator, 4, 5...
formatting circuit, 6... video signal converter,
7゜8...VTR, 9,10...Signal conversion device, 1
1...Signal processing circuit, 14...Wave frequency modulation digital signal output terminal, 15...Information signal recording? 1K (
disk), 20...Play A7.21...Personal computer, 22...Digital signal demodulator,
23... Data/compressed audio demodulator, 24... Still image decoder, 25... Monitor display device, 30... Playback signal input terminal, 31... FM demodulation circuit, 36...
Reproduction pixel data output terminal, 37... compressed audio demodulator,
38...Data demodulator, 3...Channel selection signal input terminal, 4.0.41...Output terminal.

Claims (1)

[Claims] Audible frequency bands such as NfA7 audio data obtained by digital modulation with low frequency audio signals of NjiA7 channels (N is a natural number of 2 or more), multiple channel 7 channel computer control program signals, etc. M channel A7 channels (M is a natural number of 2 or more ), redundant bits (() are added to each fixed word of the information data of the MDI channel to form one block, and are synthesized in time series for each block. 7. - An information signal recording disk in which the digital signal corresponding to the still image is further modulated and recorded.
The audio data of the A7 channel and the signal data of the plurality of A7 channels are recorded, and the audio data and signal data of each channel are recorded in real time substantially in the time rtXI axis direction in units of two or more blocks. An information signal recording disk that is characterized by the following characteristics: